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  • 2005-2009  (17)
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Material
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Ce(IV) Doped TiO〈sub〉2〈/sub〉 Nanoparticles and the Effect on Proliferation of BEL7402 Human Hepatoma Cells (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 330-332 (Feb. 2007), p. 307-310 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: To investigate nanoparticles’ antitumor effect, a globose 30~35nm Ce(IV) dopedTitanium dioxide nanoparticles (CDT) were prepared by impregnation method and characterized byX-ray diffraction (XRD) and transmission electron microscopy(TEM). Proliferation of BEL7402human Hepatoma cells was studied in vitro by using fluorescence microscopy and Flow Cytometry.The results show that cerium elements doping enhanced thermal stability of nano-size titaniumdioxide to 800℃. With UV irradiated for 8min, BEL7402 were induced a dose-dependent apoptosisby CDT, about 28.2% , 41.5% and 88.3% cells were induced apoptosis after 24h at concentration of60, 120 and 180ug/ml respectively, relative to 3.9% of that of control group cell just only in thepresence of UV
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/52/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.330-332.307.pdf
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  • 2
    Electronic Resource
    Electronic Resource
    Material Constitutive Model of 2Cr13 for FEA of Chip Formation Process (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Applied mechanics and materials Vol. 10-12 (Dec. 2007), p. 796-800 
    Details
    ISSN: 1662-7482
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The prediction accuracy of the simulation of cutting process is related with thedescription of the nonlinear behavior of material at extremely high strain, strain rate andtemperature in machining. In this paper, an integral Johnson-Cook model is presented tocharacterize the mechanical behavior of work materials in machining, and the parameters in themodel are determined by fitting the data from both quasi-static compression and cutting tests. Thenthe material equation of 2Cr13 stainless steel is derived with this method and used in the finiteelement model of orthogonal cutting with carbide tools. At last, the simulation result is verified withexperimental data
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/38/transtech_doi~10.4028%252Fwww.scientific.net%252FAMM.10-12.796.pdf
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Micro-Raman Investigation of Defects in a 4H-SiC Homoepilayer (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 556-557 (Sept. 2007), p. 387-390 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Three types of defects, namely defect I, defect II, defect III, in the 4H-SiC homoepilayerwere investigated by micro-raman scattering measurement. These defects all originate from a certaincore and are composed of (I) a wavy tail region, (II) two long tails, the so called comet and (III) threeplaits. It was found that there are 3C-SiC inclusions in the cores of defect II and defect III and theshape of inclusion determines the type of defect II or defect III. If the core contains a triangle-shapedinclusion, the defect III would be formed; otherwise, the defect II was formed. No inclusion wasobserved in the core of the defect I. The mechanisms of these defects are discussed
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/17/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.556-557.387.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    Heteroepitaxial Growth of 3C-SiC on Si (111) Substrate Using AlN as a Buffer Layer (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 600-603 (Sept. 2008), p. 251-254 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Using AlN as a buffer layer, 3C-SiC film has been grown on Si substrate by low pressure chemical vapor deposition (LPCVD). Firstly growth of AlN thin films on Si substrates under varied V/III ratios at 1100oC was investigated and the (002) preferred orientational growth with good crystallinity was obtained at the V/III ratio of 10000. Annealing at 1300oC indicated the surface morphology and crystallinity stability of AlN film. Secondly the 3C-SiC film was grown on Si substrate with AlN buffer layer. Compared to that without AlN buffer layer, the crystal quality of the 3C-SiC film was improved on the AlN/Si substrate, characterized by X-ray diffraction (XRD) and Raman measurements
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/20/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.600-603.251.pdf
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  • 5
    Electronic Resource
    Electronic Resource
    Simultaneous determination of chlorinated bacteriostats in cosmetic and pharmaceutical products (2005)
    Oxford, UK : Blackwell Science Ltd
    International journal of cosmetic science 27 (2005), S. 0 
    Details
    ISSN: 1468-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: A high-performance liquid chromatography method has been developed for simultaneous determination of triclosan (2,4,4-trichloro-2-hydroxydiphenyl ether) and triclocarban (3,4,4-trichlorocarbanilide) in cosmetic and pharmaceutical products. The two compounds could be separated on a Nucleosil C18 column and eluted with acetonitrile and water (70:30, v/v) as the mobile phase and detected with a differential refractive index detector. The retention times of triclosan and triclocarban were 5.81 and 2.99 min, respectively. The results obtained were in good agreement with those obtained by a differential pulse voltammetric method.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1467-2494.2005.00289_4.x
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Electron Irradiation Induced Transformation of (Pb5Ca5)(VO4)6F2 Apatite to CaVO3 Perovskite (2005)
    Oxford, UK : Blackwell Science Inc
    Journal of the American Ceramic Society 88 (2005), S. 0 
    Details
    ISSN: 1551-2916
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Crystallochemical changes of (Pb5Ca5)(VO4)6F2 apatite under electron irradiation were examined by transmission electron microscopy. The apatite, a synthetic analog of vanadinite, was moderately stable towards a less intense 300-keV LaB6 source, while it changed rapidly in structure when exposed to the higher flux of a 200-keV field emission gun. The electron beam induced transformation of vanadinite proceeds sequentially by (i) migration and loss of fluorine, (ii) lead volatilization and conversion to 2–5-nm platelets of a glaserite-type structure, and (iii) the reduction of V5+ to V4+ with the removal of lead and calcium oxide that leads to single-crystal CaVO3 perovskite as the ultimate product. The phase transformations are interpreted based on the crystallographic relations among the CaVO3 perovskite, the (Pb5Ca5)(VO4)6F2 apatite and the glaserite-type structures, and compositional changes under electron irradiation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1551-2916.2004.00002.x
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  • 7
    Electronic Resource
    Electronic Resource
    081
A New Antiseptic Solution with Potential Applications in Wound Care (2005)
    Oxford, UK; Malden, USA : Blackwell Publishing Ltd/Inc.
    Wound repair and regeneration 13 (2005), S. 0 
    Details
    ISSN: 1524-475X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Despite the use of antibiotics, antiseptics, and improved sterile techniques, infection remains one of the most frequent complications of wound healing. Infection must be avoided to permit proper wound healing. Systemic and topical antibiotics and antiseptics with broad antimicrobial spectra have been used. Antiseptics have not generally been reported to develop bacterial resistance like antibiotics. Several reports have suggested that antiseptics exhibit significant cytotoxicity toward wound bed cells and may interfere with the normal wound healing process. Thus, for chronic ulcers, the standard of care is debridment and moist dressing with saline.We will describe the properties of a new topical antimicrobial solution, NVC-101. These include its broad-spectrum antimicrobial activities against gram positive, gram negative bacteria, yeast and fungi pathogens, and its lower toxicity as compared to commonly used topical antiseptics. In addition, we will describe the in vivo safety profile of NVC-101 in the rabbit eye and guinea pig sensitization models, as well as 28-day application to full thickness wounds in rats and mini-pigs. Based on these findings, multicenter Phase II clinical trials on infected chronic ulcers are under way.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1067-1927.2005.130215cc.x
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  • 8
    Electronic Resource
    Electronic Resource
    The efficacy of Helicobacter pylori eradication related to CYP2C19 metabolism (2005)
    Oxford, UK : Blackwell Science Ltd
    Alimentary pharmacology & therapeutics 22 (2005), S. 0 
    Details
    ISSN: 1365-2036
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2036.2005.02545.x
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    Near Net Forming of Metal-Ceramic Parts by Plasma Spraying (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 280-283 (Feb. 2007), p. 1815-1818 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: A novel technology of metal-ceramic parts with special functions formed by plasmaspraying has become an important research trend. In this paper, the technical characteristics and spray parameters have been analyzed in detail based on the experiments of metal-ceramic near net forming, and some important techniques such as spray mould fabricating, backing and demoulding have been researched and summarized. Furthermore, the microstructure and property have been analyzed to forecast the quality of spray-formed parts. The research results show that plasma spraying is suitable for the production of metal-ceramic parts of any size with specialmechanical and thermomechanical properties, which can realize the contemporary integration of forming and machining. Therefore, this technology with simple process and low cost is a method of metal-ceramic fabrication with a broad and brilliant prospect
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/49/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.280-283.1815.pdf
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  • 10
    Electronic Resource
    Electronic Resource
    The Preparation and Properties of New Silver-Metal Oxide Graded Composite Electrical Contact Materials (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 280-283 (Feb. 2007), p. 1917-1920 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Electrical contact material is a very important material for the electric power industry. An electrical contact material should display good structural characteristics (suitable hardness, high thermal conductivity and stabilization) as well as a good functional characteristic (low electrical resistivity). It is difficult to fabricate such a contact material with all these good performing parameters by common techniques because these physical parameters influence each other. In this paper, we report a novel investigation to design and prepare silver-metal oxide composite materials according to functionally layered and graded material (FLGM) concept and meeting requirement as electrical contact material. The silver-based composite samples characterized by layered component were prepared with conventionalsolid-phase sintering technique. One kind of sample consists of tin dioxide and silver material, in which SnO2 exhibits a graded distribution. Another consists of two metal oxides, cadmium and zinc oxides, and silver material, in which each layer has different metal oxide. Hardness, thermal conductivity and electrical conductivity, were measured and related problems are discussed. Especially, welding resistanceas an important parameter for practical application was tested. SEM analyses before and after electrical erosion were also performed. We conclude that the functionally graded material (FGM) concept as a novel designing and fabricating method has potential for electrical contact composite material
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/49/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.280-283.1917.pdf
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